Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Fatty Acid Composition of Chub Mackerel (Scomber japonicus) Fed a Diet Fortified with CLA and Ascidian (Halocynthia roretzi) Tunic Extracts

멍게껍질 추출색소 및 CLA (Conjugated Linoleic Acid)가 함유된 사료를 섭취한 고등어 (Scober japonicus)의 일반성분 및 지방산 조성

  • Park, Eun-Jung (Department of Seafood Science and Technology / Institute of Marine Industry, Gyeongsnag National University) ;
  • Kim, Jong-Tae (Gyeongnam Special Feed Company) ;
  • Kang, Seok-Joong (Department of Marine Life Science / Institute of Marine Industry, Gyeongsnag National University) ;
  • Choi, Byeong-Dae (Department of Seafood Science and Technology / Institute of Marine Industry, Gyeongsnag National University)
  • 박은정 (경상대학교 해양식품공학과 / 해양산업연구소) ;
  • 김종태 (경남특수사료) ;
  • 강석중 (경상대학교 해양생명과학과) ;
  • 최병대 (경상대학교 해양식품공학과 / 해양산업연구소)
  • Received : 2010.08.20
  • Accepted : 2010.12.03
  • Published : 2010.12.31
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Abstract

To examine the functional properties of conjugated linoleic acid (CLA) and ascidian tunic extracts in fish, we compared mackerel fed ascidian tunic extract and CLA (CA25) and a control group. The daily growth index of CA25 was 1.92 compared to 1.86 in the control group. The viscerosomatic index of CA25 was 36.7% lower than that of the control group. After 8 weeks, the protein content decreased from 19.7 to 17.5% in the CA25 group. The ascidian tunic extract content in the viscera was much higher than in muscle (0.13 vs. 0.03 mg/100 g) after 8 weeks. At the start, the n-3 fatty acid content of the experimental fish was 25.2% in muscle and 23.7% in viscera. The CLA content in muscle in the CA25 group was 2.1% after 4 weeks and 2.3% after 8 weeks. By contrast, the CLA content in viscera did not change after 8 weeks.

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References

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